filename | src/sh4/ia64abi.h |
changeset | 901:32c5cf5e206f |
prev | 800:0d1be79c9b33 |
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author | nkeynes |
date | Wed Oct 29 23:51:58 2008 +0000 (15 years ago) |
permissions | -rw-r--r-- |
last change | Use regparam calling conventions for all functions called from translated code, along with a few other high-use functions. Can probably extend this to all functions, but as it is this is a nice performance boost |
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nkeynes@539 | 1 | /** |
nkeynes@586 | 2 | * $Id$ |
nkeynes@539 | 3 | * |
nkeynes@736 | 4 | * Provides the implementation for the AMD64 ABI (eg prologue, epilogue, and |
nkeynes@539 | 5 | * calling conventions) |
nkeynes@539 | 6 | * |
nkeynes@539 | 7 | * Copyright (c) 2007 Nathan Keynes. |
nkeynes@539 | 8 | * |
nkeynes@539 | 9 | * This program is free software; you can redistribute it and/or modify |
nkeynes@539 | 10 | * it under the terms of the GNU General Public License as published by |
nkeynes@539 | 11 | * the Free Software Foundation; either version 2 of the License, or |
nkeynes@539 | 12 | * (at your option) any later version. |
nkeynes@539 | 13 | * |
nkeynes@539 | 14 | * This program is distributed in the hope that it will be useful, |
nkeynes@539 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
nkeynes@539 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
nkeynes@539 | 17 | * GNU General Public License for more details. |
nkeynes@539 | 18 | */ |
nkeynes@539 | 19 | |
nkeynes@736 | 20 | #ifndef lxdream_ia64abi_H |
nkeynes@736 | 21 | #define lxdream_ia64abi_H 1 |
nkeynes@539 | 22 | |
nkeynes@586 | 23 | #include <unwind.h> |
nkeynes@539 | 24 | |
nkeynes@539 | 25 | #define load_ptr( reg, ptr ) load_imm64( reg, (uint64_t)ptr ); |
nkeynes@736 | 26 | |
nkeynes@539 | 27 | /** |
nkeynes@539 | 28 | * Note: clobbers EAX to make the indirect call - this isn't usually |
nkeynes@539 | 29 | * a problem since the callee will usually clobber it anyway. |
nkeynes@539 | 30 | * Size: 12 bytes |
nkeynes@539 | 31 | */ |
nkeynes@539 | 32 | #define CALL_FUNC0_SIZE 12 |
nkeynes@539 | 33 | static inline void call_func0( void *ptr ) |
nkeynes@539 | 34 | { |
nkeynes@539 | 35 | load_imm64(R_EAX, (uint64_t)ptr); |
nkeynes@539 | 36 | CALL_r32(R_EAX); |
nkeynes@539 | 37 | } |
nkeynes@539 | 38 | |
nkeynes@539 | 39 | #define CALL_FUNC1_SIZE 14 |
nkeynes@539 | 40 | static inline void call_func1( void *ptr, int arg1 ) |
nkeynes@539 | 41 | { |
nkeynes@800 | 42 | REXW(); MOV_r32_r32(arg1, R_EDI); |
nkeynes@539 | 43 | call_func0(ptr); |
nkeynes@539 | 44 | } |
nkeynes@539 | 45 | |
nkeynes@539 | 46 | #define CALL_FUNC2_SIZE 16 |
nkeynes@539 | 47 | static inline void call_func2( void *ptr, int arg1, int arg2 ) |
nkeynes@539 | 48 | { |
nkeynes@800 | 49 | REXW(); MOV_r32_r32(arg1, R_EDI); |
nkeynes@800 | 50 | REXW(); MOV_r32_r32(arg2, R_ESI); |
nkeynes@539 | 51 | call_func0(ptr); |
nkeynes@539 | 52 | } |
nkeynes@539 | 53 | |
nkeynes@586 | 54 | #define MEM_WRITE_DOUBLE_SIZE 35 |
nkeynes@539 | 55 | /** |
nkeynes@539 | 56 | * Write a double (64-bit) value into memory, with the first word in arg2a, and |
nkeynes@539 | 57 | * the second in arg2b |
nkeynes@539 | 58 | */ |
nkeynes@539 | 59 | static inline void MEM_WRITE_DOUBLE( int addr, int arg2a, int arg2b ) |
nkeynes@539 | 60 | { |
nkeynes@539 | 61 | PUSH_r32(arg2b); |
nkeynes@539 | 62 | PUSH_r32(addr); |
nkeynes@539 | 63 | call_func2(sh4_write_long, addr, arg2a); |
nkeynes@586 | 64 | POP_r32(R_EDI); |
nkeynes@586 | 65 | POP_r32(R_ESI); |
nkeynes@586 | 66 | ADD_imm8s_r32(4, R_EDI); |
nkeynes@586 | 67 | call_func0(sh4_write_long); |
nkeynes@539 | 68 | } |
nkeynes@539 | 69 | |
nkeynes@547 | 70 | #define MEM_READ_DOUBLE_SIZE 43 |
nkeynes@539 | 71 | /** |
nkeynes@539 | 72 | * Read a double (64-bit) value from memory, writing the first word into arg2a |
nkeynes@539 | 73 | * and the second into arg2b. The addr must not be in EAX |
nkeynes@539 | 74 | */ |
nkeynes@539 | 75 | static inline void MEM_READ_DOUBLE( int addr, int arg2a, int arg2b ) |
nkeynes@539 | 76 | { |
nkeynes@547 | 77 | REXW(); SUB_imm8s_r32( 8, R_ESP ); |
nkeynes@539 | 78 | PUSH_r32(addr); |
nkeynes@539 | 79 | call_func1(sh4_read_long, addr); |
nkeynes@539 | 80 | POP_r32(R_EDI); |
nkeynes@539 | 81 | PUSH_r32(R_EAX); |
nkeynes@539 | 82 | ADD_imm8s_r32(4, R_EDI); |
nkeynes@539 | 83 | call_func0(sh4_read_long); |
nkeynes@539 | 84 | MOV_r32_r32(R_EAX, arg2b); |
nkeynes@539 | 85 | POP_r32(arg2a); |
nkeynes@547 | 86 | REXW(); ADD_imm8s_r32( 8, R_ESP ); |
nkeynes@539 | 87 | } |
nkeynes@539 | 88 | |
nkeynes@539 | 89 | |
nkeynes@539 | 90 | /** |
nkeynes@539 | 91 | * Emit the 'start of block' assembly. Sets up the stack frame and save |
nkeynes@539 | 92 | * SI/DI as required |
nkeynes@539 | 93 | */ |
nkeynes@901 | 94 | void enter_block( ) |
nkeynes@539 | 95 | { |
nkeynes@539 | 96 | PUSH_r32(R_EBP); |
nkeynes@539 | 97 | /* mov &sh4r, ebp */ |
nkeynes@669 | 98 | load_ptr( R_EBP, ((uint8_t *)&sh4r) + 128 ); |
nkeynes@539 | 99 | } |
nkeynes@901 | 100 | XS |
nkeynes@539 | 101 | /** |
nkeynes@539 | 102 | * Exit the block with sh4r.pc already written |
nkeynes@539 | 103 | */ |
nkeynes@586 | 104 | void exit_block_pcset( sh4addr_t pc ) |
nkeynes@539 | 105 | { |
nkeynes@539 | 106 | load_imm32( R_ECX, ((pc - sh4_x86.block_start_pc)>>1)*sh4_cpu_period ); // 5 |
nkeynes@539 | 107 | ADD_r32_sh4r( R_ECX, REG_OFFSET(slice_cycle) ); // 6 |
nkeynes@590 | 108 | load_spreg( R_EAX, R_PC ); |
nkeynes@590 | 109 | if( sh4_x86.tlb_on ) { |
nkeynes@736 | 110 | call_func1(xlat_get_code_by_vma,R_EAX); |
nkeynes@590 | 111 | } else { |
nkeynes@736 | 112 | call_func1(xlat_get_code,R_EAX); |
nkeynes@590 | 113 | } |
nkeynes@590 | 114 | POP_r32(R_EBP); |
nkeynes@590 | 115 | RET(); |
nkeynes@590 | 116 | } |
nkeynes@590 | 117 | |
nkeynes@590 | 118 | /** |
nkeynes@590 | 119 | * Exit the block with sh4r.new_pc written with the target address |
nkeynes@590 | 120 | */ |
nkeynes@590 | 121 | void exit_block_newpcset( sh4addr_t pc ) |
nkeynes@590 | 122 | { |
nkeynes@590 | 123 | load_imm32( R_ECX, ((pc - sh4_x86.block_start_pc)>>1)*sh4_cpu_period ); // 5 |
nkeynes@590 | 124 | ADD_r32_sh4r( R_ECX, REG_OFFSET(slice_cycle) ); // 6 |
nkeynes@590 | 125 | load_spreg( R_EAX, R_NEW_PC ); |
nkeynes@590 | 126 | store_spreg( R_EAX, R_PC ); |
nkeynes@586 | 127 | if( sh4_x86.tlb_on ) { |
nkeynes@736 | 128 | call_func1(xlat_get_code_by_vma,R_EAX); |
nkeynes@586 | 129 | } else { |
nkeynes@736 | 130 | call_func1(xlat_get_code,R_EAX); |
nkeynes@586 | 131 | } |
nkeynes@539 | 132 | POP_r32(R_EBP); |
nkeynes@539 | 133 | RET(); |
nkeynes@539 | 134 | } |
nkeynes@539 | 135 | |
nkeynes@586 | 136 | #define EXIT_BLOCK_SIZE(pc) (25 + (IS_IN_ICACHE(pc)?10:CALL_FUNC1_SIZE)) |
nkeynes@539 | 137 | /** |
nkeynes@539 | 138 | * Exit the block to an absolute PC |
nkeynes@539 | 139 | */ |
nkeynes@539 | 140 | void exit_block( sh4addr_t pc, sh4addr_t endpc ) |
nkeynes@539 | 141 | { |
nkeynes@539 | 142 | load_imm32( R_ECX, pc ); // 5 |
nkeynes@539 | 143 | store_spreg( R_ECX, REG_OFFSET(pc) ); // 3 |
nkeynes@586 | 144 | if( IS_IN_ICACHE(pc) ) { |
nkeynes@736 | 145 | REXW(); MOV_moff32_EAX( xlat_get_lut_entry(pc) ); |
nkeynes@586 | 146 | } else if( sh4_x86.tlb_on ) { |
nkeynes@736 | 147 | call_func1(xlat_get_code_by_vma, R_ECX); |
nkeynes@586 | 148 | } else { |
nkeynes@736 | 149 | call_func1(xlat_get_code,R_ECX); |
nkeynes@586 | 150 | } |
nkeynes@586 | 151 | REXW(); AND_imm8s_r32( 0xFC, R_EAX ); // 4 |
nkeynes@539 | 152 | load_imm32( R_ECX, ((endpc - sh4_x86.block_start_pc)>>1)*sh4_cpu_period ); // 5 |
nkeynes@539 | 153 | ADD_r32_sh4r( R_ECX, REG_OFFSET(slice_cycle) ); // 6 |
nkeynes@539 | 154 | POP_r32(R_EBP); |
nkeynes@539 | 155 | RET(); |
nkeynes@539 | 156 | } |
nkeynes@539 | 157 | |
nkeynes@539 | 158 | |
nkeynes@586 | 159 | #define EXIT_BLOCK_REL_SIZE(pc) (28 + (IS_IN_ICACHE(pc)?10:CALL_FUNC1_SIZE)) |
nkeynes@586 | 160 | |
nkeynes@586 | 161 | /** |
nkeynes@586 | 162 | * Exit the block to a relative PC |
nkeynes@586 | 163 | */ |
nkeynes@586 | 164 | void exit_block_rel( sh4addr_t pc, sh4addr_t endpc ) |
nkeynes@586 | 165 | { |
nkeynes@586 | 166 | load_imm32( R_ECX, pc - sh4_x86.block_start_pc ); // 5 |
nkeynes@586 | 167 | ADD_sh4r_r32( R_PC, R_ECX ); |
nkeynes@586 | 168 | store_spreg( R_ECX, REG_OFFSET(pc) ); // 3 |
nkeynes@586 | 169 | if( IS_IN_ICACHE(pc) ) { |
nkeynes@736 | 170 | REXW(); MOV_moff32_EAX( xlat_get_lut_entry(GET_ICACHE_PHYS(pc)) ); // 5 |
nkeynes@586 | 171 | } else if( sh4_x86.tlb_on ) { |
nkeynes@736 | 172 | call_func1(xlat_get_code_by_vma,R_ECX); |
nkeynes@586 | 173 | } else { |
nkeynes@736 | 174 | call_func1(xlat_get_code,R_ECX); |
nkeynes@586 | 175 | } |
nkeynes@586 | 176 | REXW(); AND_imm8s_r32( 0xFC, R_EAX ); // 4 |
nkeynes@586 | 177 | load_imm32( R_ECX, ((endpc - sh4_x86.block_start_pc)>>1)*sh4_cpu_period ); // 5 |
nkeynes@586 | 178 | ADD_r32_sh4r( R_ECX, REG_OFFSET(slice_cycle) ); // 6 |
nkeynes@586 | 179 | POP_r32(R_EBP); |
nkeynes@586 | 180 | RET(); |
nkeynes@586 | 181 | } |
nkeynes@586 | 182 | |
nkeynes@539 | 183 | /** |
nkeynes@539 | 184 | * Write the block trailer (exception handling block) |
nkeynes@539 | 185 | */ |
nkeynes@539 | 186 | void sh4_translate_end_block( sh4addr_t pc ) { |
nkeynes@539 | 187 | if( sh4_x86.branch_taken == FALSE ) { |
nkeynes@736 | 188 | // Didn't exit unconditionally already, so write the termination here |
nkeynes@736 | 189 | exit_block_rel( pc, pc ); |
nkeynes@539 | 190 | } |
nkeynes@539 | 191 | if( sh4_x86.backpatch_posn != 0 ) { |
nkeynes@736 | 192 | unsigned int i; |
nkeynes@736 | 193 | // Raise exception |
nkeynes@736 | 194 | uint8_t *end_ptr = xlat_output; |
nkeynes@736 | 195 | MOV_r32_r32( R_EDX, R_ECX ); |
nkeynes@736 | 196 | ADD_r32_r32( R_EDX, R_ECX ); |
nkeynes@736 | 197 | ADD_r32_sh4r( R_ECX, R_PC ); |
nkeynes@736 | 198 | MOV_moff32_EAX( &sh4_cpu_period ); |
nkeynes@736 | 199 | MUL_r32( R_EDX ); |
nkeynes@736 | 200 | ADD_r32_sh4r( R_EAX, REG_OFFSET(slice_cycle) ); |
nkeynes@539 | 201 | |
nkeynes@736 | 202 | call_func0( sh4_raise_exception ); |
nkeynes@736 | 203 | load_spreg( R_EAX, R_PC ); |
nkeynes@736 | 204 | if( sh4_x86.tlb_on ) { |
nkeynes@736 | 205 | call_func1(xlat_get_code_by_vma,R_EAX); |
nkeynes@736 | 206 | } else { |
nkeynes@736 | 207 | call_func1(xlat_get_code,R_EAX); |
nkeynes@736 | 208 | } |
nkeynes@736 | 209 | POP_r32(R_EBP); |
nkeynes@736 | 210 | RET(); |
nkeynes@539 | 211 | |
nkeynes@736 | 212 | // Exception already raised - just cleanup |
nkeynes@736 | 213 | uint8_t *preexc_ptr = xlat_output; |
nkeynes@736 | 214 | MOV_r32_r32( R_EDX, R_ECX ); |
nkeynes@736 | 215 | ADD_r32_r32( R_EDX, R_ECX ); |
nkeynes@736 | 216 | ADD_r32_sh4r( R_ECX, R_SPC ); |
nkeynes@736 | 217 | MOV_moff32_EAX( &sh4_cpu_period ); |
nkeynes@736 | 218 | MUL_r32( R_EDX ); |
nkeynes@736 | 219 | ADD_r32_sh4r( R_EAX, REG_OFFSET(slice_cycle) ); |
nkeynes@736 | 220 | load_spreg( R_EDI, R_PC ); |
nkeynes@736 | 221 | if( sh4_x86.tlb_on ) { |
nkeynes@736 | 222 | call_func0(xlat_get_code_by_vma); |
nkeynes@736 | 223 | } else { |
nkeynes@736 | 224 | call_func0(xlat_get_code); |
nkeynes@736 | 225 | } |
nkeynes@736 | 226 | POP_r32(R_EBP); |
nkeynes@736 | 227 | RET(); |
nkeynes@586 | 228 | |
nkeynes@736 | 229 | for( i=0; i< sh4_x86.backpatch_posn; i++ ) { |
nkeynes@736 | 230 | uint32_t *fixup_addr = (uint32_t *)&xlat_current_block->code[sh4_x86.backpatch_list[i].fixup_offset]; |
nkeynes@736 | 231 | *fixup_addr = xlat_output - (uint8_t *)&xlat_current_block->code[sh4_x86.backpatch_list[i].fixup_offset] - 4; |
nkeynes@736 | 232 | if( sh4_x86.backpatch_list[i].exc_code < 0 ) { |
nkeynes@736 | 233 | load_imm32( R_EDX, sh4_x86.backpatch_list[i].fixup_icount ); |
nkeynes@736 | 234 | int stack_adj = -1 - sh4_x86.backpatch_list[i].exc_code; |
nkeynes@736 | 235 | if( stack_adj > 0 ) { |
nkeynes@736 | 236 | ADD_imm8s_r32( stack_adj*4, R_ESP ); |
nkeynes@736 | 237 | } |
nkeynes@736 | 238 | int rel = preexc_ptr - xlat_output; |
nkeynes@736 | 239 | JMP_rel(rel); |
nkeynes@736 | 240 | } else { |
nkeynes@736 | 241 | load_imm32( R_EDI, sh4_x86.backpatch_list[i].exc_code ); |
nkeynes@736 | 242 | load_imm32( R_EDX, sh4_x86.backpatch_list[i].fixup_icount ); |
nkeynes@736 | 243 | int rel = end_ptr - xlat_output; |
nkeynes@736 | 244 | JMP_rel(rel); |
nkeynes@736 | 245 | } |
nkeynes@736 | 246 | } |
nkeynes@539 | 247 | } |
nkeynes@539 | 248 | } |
nkeynes@539 | 249 | |
nkeynes@586 | 250 | _Unwind_Reason_Code xlat_check_frame( struct _Unwind_Context *context, void *arg ) |
nkeynes@586 | 251 | { |
nkeynes@586 | 252 | void *rbp = (void *)_Unwind_GetGR(context, 6); |
nkeynes@670 | 253 | void *expect = (((uint8_t *)&sh4r) + 128 ); |
nkeynes@669 | 254 | if( rbp == expect ) { |
nkeynes@586 | 255 | void **result = (void **)arg; |
nkeynes@586 | 256 | *result = (void *)_Unwind_GetIP(context); |
nkeynes@586 | 257 | return _URC_NORMAL_STOP; |
nkeynes@586 | 258 | } |
nkeynes@736 | 259 | |
nkeynes@586 | 260 | return _URC_NO_REASON; |
nkeynes@586 | 261 | } |
nkeynes@586 | 262 | |
nkeynes@586 | 263 | void *xlat_get_native_pc() |
nkeynes@586 | 264 | { |
nkeynes@586 | 265 | struct _Unwind_Exception exc; |
nkeynes@736 | 266 | |
nkeynes@586 | 267 | void *result = NULL; |
nkeynes@586 | 268 | _Unwind_Backtrace( xlat_check_frame, &result ); |
nkeynes@586 | 269 | return result; |
nkeynes@586 | 270 | } |
nkeynes@586 | 271 | |
nkeynes@736 | 272 | #endif /* !lxdream_ia64abi_H */ |
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